\documentclass{article}
%\usepackage{pgfplots}
%\pgfplotsset{compat=newest}
%\pgfplotsset{plot coordinates/math parser=false}
\usepackage{setspace,subfigure}
\usepackage{tikz}
\usetikzlibrary{plotmarks}
\usetikzlibrary{lindenmayersystems}
\usetikzlibrary{decorations.pathmorphing}
\usepackage{geometry}
\geometry{verbose=false,papersize={4in,3.6in},body={4in,3.6in},marginratio={4:3, 2:3}}% marginratio={horizontal ratio,verticalratio}
\begin{document}
\thispagestyle{empty}
\null\vspace{-10pt}
\hspace{0pt}
\begin{tikzpicture}[font=\LARGE]
\path[use as bounding box] (-2,-2) rectangle (7,7);
\node[] at (2.5,2.5) {\input{obj441}};
\draw[] plot[only marks,mark=*,mark size=0.5pt] file{obj441.txt};  
\end{tikzpicture}
\end{document}
